Ep 5. Cadillac LSA 427 Stroker Part 1

In season 3 episode 5 of PowerNation: Engine Power, the focus is on building a Cadillac LSA 427 Stroker engine. Hosts Mike and Pat start the process by stripping the old engine down to its bare bones. The Cadillac's original engine is a 6.2-liter LSA supercharged V8 engine, which already produces a hefty 580 horsepower and 556 lb-ft of torque. However, the goal of this build is to create an even more powerful engine by increasing its displacement and adding even more mods.

The first step is to bore out the engine, which involves removing some material from the cylinder walls to increase its size. Mike and Pat take a closer look at the block, and then the duo sets off to visit Dart Machinery, a well-known engine parts manufacturer, to get a set of LS7 heads for the engine. These heads are specifically designed for high-performance builds and offer exceptional performance and durability. Before any modifications to the heads, the team installs them onto the block.

Once the heads are installed, Mike and Pat work on porting and polishing them to improve airflow. This process involves smoothing out the inside of the intake and exhaust ports to reduce turbulence, which can increase power and torque. Additionally, the team upgrades to a more aggressive camshaft lobe design, which will help the engine produce even more power.

With all of the modifications made, the team begins to assemble the engine. They add high-quality bearings, rods, and pistons to the block and then seal everything together with a gasket kit. After final touches and tuning, the Cadillac LSA 427 stroker engine is ready to hit the dyno.

Throughout the episode, Mike and Pat explain the importance of each step that they take in the engine-building process. They also provide useful tips and tricks for aspiring builders, such as how to properly torque head bolts and check valve clearances.

Overall, episode 5 of season 3 of PowerNation: Engine Power is an exciting and informative look into the process of building a high-performance engine from scratch. The Cadillac LSA 427 Stroker is an impressive feat, and the attention to detail and precision of the work shown throughout the episode is impressive. Anyone interested in engine building or high-performance cars will find this episode to be both engaging and educational.